Rear Bracket And Insulator Assembly Removal (2.3L); Exhaust Manifold Removal (2.3L); Rear Bracket And Insulator Assembly Installation (2.3L); Exhaust Manifold Installation (2.3L) - Mazda B-Series 1997 Workshop Manual

EXHAUST SYSTEM
Removal Note
Rear bracket and insulator assembly
1.
Remove the silencer.
2. Remove the rivet which attaches the bracket and insulator
assembly to the frame.
4BUOF1-152
Exhaust manifold
1. Remove the intake air system components. (Refer to
page F1-2.)
2. Remove the EGR pipe at the exhaust manifold and
loosen at the EGR valve.
3. Disconnect the heated oxygen sensor connector.
4. Remove the two nuts and remove the rear engine lifting
eye from the exhaust manifold studs.
5. Remove the exhaust manifold retaining bolts and studs.
6. Remove the exhaust manifold from the vehicle.
6BUOF1-009
Installation Note
Rear bracket and insulator assembly
1. Position the bracket and insulator assembly on the frame.
2. Attach the bracket and insulator assembly with a nut and
bolt.
Tightening torque:
68-94 N-m (6.9-9.6 kgfem, 50-70 ft-lbf)
4BUOF1-154
1
Exhaust manifold
1.
lnstall two guide pins into cylinder head holes
1
and 8.
2. lnstall the gasket over the guide pins.
3. lnstall the exhaust manifold over the gasket and guide
pins.
4.
lnstall the two bolts and remove the guide pins.
5.
lnstall the remaining bolts and studs and tighten in the
sequence shown in two steps.
Tightening torque:
Step 1: 20-30 N.m (2.1-3.4 kgf-m, 15-22 ft.lbf)
Step 2: 6 0 - 4 0 N-m (6.1-4.1 kgfvm, 45-59 ft.lbf)
6. lnstall the rear engine lifting eye on the studs with the nuts
and tighten.
Tightening torque:
20-44 N-m I2.1-3.0 kgfem, 15-22
ft.lbf)
7. Connect the heated oxygen sensor connector.
8. Connect the EGR pipe at the exhaust manifold and
tighten.
I /
~ightening torque:
MB1330-B
6BUOF1-010
34--47 N
-
m
(3.4--4.8 kgf
.
m,
25-35 ft
-
lbf)
9. lnstall the intake air system-components. (Refer to page
F1-2.)